Sadly the state of California bans simple box fans + filters from being sold. For example if you try to buy a "Lasko Air Flex Steel Portable Home Office 3 Speed Air Purifier Machine Box Room Fan with Manual Ergonomic Control Knob and 6 Foot Cord, White" from Amazon you will be greeted with this when you try to order:
"""This product does not meet California air cleaner regulation requirements, and cannot be shipped to California"""
This is essentially like the video, but a slightly beefed up box fan to handle the extra load from the filter. It also takes standard household furnace filters. People have tested these and they totally work.
For a state that often has horrific air quality due to wild fires it's total BS you can't quicky order something like this off Amazon in a pinch.
"""This product does not meet California air cleaner regulation requirements, and cannot be shipped to California"""
This is essentially like the video, but a slightly beefed up box fan to handle the extra load from the filter. It also takes standard household furnace filters. People have tested these and they totally work.
For a state that often has horrific air quality due to wild fires it's total BS you can't quicky order something like this off Amazon in a pinch.